On Wed, Sep 30, 2020 at 03:06:34PM +0800, Yong Wu wrote: > The standard input iova bits is 32. MediaTek quad the lvl1 pagetable > (4 * lvl1). No change for lvl2 pagetable. Then the iova bits can reach > 34bit. > > Signed-off-by: Yong Wu <yong.wu@xxxxxxxxxxxx> > --- > drivers/iommu/io-pgtable-arm-v7s.c | 13 ++++++++++--- > drivers/iommu/mtk_iommu.c | 2 +- > 2 files changed, 11 insertions(+), 4 deletions(-) > > diff --git a/drivers/iommu/io-pgtable-arm-v7s.c b/drivers/iommu/io-pgtable-arm-v7s.c > index 8362fdf76657..306bae2755ed 100644 > --- a/drivers/iommu/io-pgtable-arm-v7s.c > +++ b/drivers/iommu/io-pgtable-arm-v7s.c > @@ -50,10 +50,17 @@ > */ > #define ARM_V7S_ADDR_BITS 32 If we rename this to _ARM_V7S_ADDR_BITS can we then have ARM_V7S_ADDR_BITS take a cfg parameter and move the arm_v7s_is_mtk_enabled() check in there? Same for _ARM_V7S_LVL_BITS. That would avoid scattering arm_v7s_is_mtk_enabled() into all the users. Will
